Is him lendingme his jacket a sign he is interestedin me?

Ok so I (19 f) went to the same school as this guy (20m) for a year and we talked a little but we hadn't seen each other for 2 years until a few days ago. when we where at the same event.

We bumped into each other 2 times at random and by the 1 pm he texted me asking me where I was at.

we met up and it was raining and I only had a tshirt on I wasn't cold just wet. So he said I could wear his jacket. we walk around for a little over an hour stoping by my car where I had multiple jacket lay in clear view when he had to go on a bus with his class I was going to give him his jacket but said I could keep it till next time we hang out. So is this some kind of flirting or was he just very polite

Is him lendingme his jacket a sign he is interestedin me?
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